Research and application of key technology of intelligent operation and inspection in Intelligent Substation

With the development of intelligent substation, the traditional operation and maintenance mode has been unable to meet the requirements of substation. The key to improve the operation and maintenance level is to realize condition monitoring and maintenance based on online operation and maintenance. How to build and realize the online operation and maintenance system of relay protection is mainly introduced in this paper. In addition, the key technologies of operation and maintenance system architecture, protection equipment condition monitoring, secondary circuit condition monitoring and auxiliary maintenance operation are introduced and discussed. Finally, the feasibility of the implementation method of the proposed online operation and maintenance is verified by practice.